High Tempo Bonus

The High Tempo Bonus (ハイテンポボーナス Hai Tempo Bonasu) is a feature introduced in Thunder Force V. This feature acts as a score multiplier given to the player as a reward to destroying a medium or large sized enemy or a boss in a certain period of time. It appears as a sight on the enemy's weak points with a clock needle running on a certain speed, once it makes one loop, the bonus ends. The highest multiplier of the High Tempo Bonus is of 16.

This feature was later included in Thunder Force VI, however the time is shorter than the previous game and there's no indicator to tell the player how much time is passing.